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  • Title: Adsorptive stripping voltammetric determination of cefepime at the mercury electrode in human urine and cerebrospinal fluid, and differential pulse polarographic determination in serum.
    Author: Palacios FJ, Mochón MC, Sánchez JC, Carranza JH.
    Journal: J Pharm Sci; 2003 Sep; 92(9):1854-9. PubMed ID: 12950003.
    Abstract:
    The cephalosporin cefepime has been studied by adsorptive stripping voltammetric on the hanging mercury drop electrode, followed by linear sweep voltammetry (staircase). The adsorptive stripping response was evaluated with respect to preconcentration dependence and other variables. The drug is strongly adsorbed in acid media, with maximum adsorption at pH 5.8. The detection limit found was 4.8 x 10(-10) M, with 120-s preconcentration. The relative standard deviation at the 10(-7) M level was 0.93%. This method was applied to the determination of cefepime in human urine and cerebrospinal fluid. Differential pulse polarography has been applied to determination in human serum.
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